Alaska earthquakes

M7.4 earthquake 265 km WSW of Adak, Alaska

A magnitude 7.4 earthquake struck 265 km WSW of Adak, Alaska on Thu, Feb 4, 1965, 8:40 PM GMT+12 (08:40 UTC), 9 km (6 mi) below the surface.

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The earthquake

Magnitude
7.4 (mw), major
Local time
UTC
1965-02-04 08:40:39 UTC
Depth
9.0 km (5.6 mi), shallow
Epicenter
51.436° N, 179.592° E
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Magnitude uncertainty
±0.32
Depth from
From location

Nearby

Within 100 km, magnitude 2.5 and up: 6 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 5.8298 km WSW of Adak, Alaska · 22507 days ago · 20 km deep · 34 km away
  2. 5.5259 km W of Adak, Alaska · 22505 days ago · 40 km deep · 93 km away
  3. 5.8292 km WSW of Adak, Alaska · 22499 days ago · 26 km deep · 45 km away
  4. 5.8281 km WSW of Adak, Alaska · 22495 days ago · 34 km deep · 16 km away
  5. 5.5Rat Islands, Aleutian Islands, Alaska · 22495 days ago · 26 km deep · 85 km away
  6. 5.6284 km WSW of Adak, Alaska · 22481 days ago · 37 km deep · 53 km away

Before

  1. 8.71965 Western Aleutian Islands (Hawadax/Rat Islands) Earthquake · 22510 days ago · 30 km deep · 64 km away
  2. 5.8Rat Islands, Aleutian Islands, Alaska · 22510 days ago · 30 km deep · 82 km away
  3. 5.6210 km W of Adak, Alaska · 22515 days ago · 88 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem859264 (also filed as ushis2756). Read Tue, Sep 22, 2026, 7:57 AM UTC.